The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A184071 T(n,k)=Number of (n+1)X(k+1) binary arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 10
 7, 11, 11, 20, 16, 20, 34, 36, 36, 34, 54, 73, 130, 73, 54, 81, 134, 382, 382, 134, 81, 116, 225, 924, 1918, 924, 225, 116, 160, 354, 1884, 7671, 7671, 1884, 354, 160, 214, 529, 3463, 22452, 56723, 22452, 3463, 529, 214, 279, 758, 5800, 57488, 288744, 288744 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ...7...11....20.....34.......54.........81..........116............160 ..11...16....36.....73......134........225..........354............529 ..20...36...130....382......924.......1884.........3463...........5800 ..34...73...382...1918.....7671......22452........57488.........126978 ..54..134...924...7671....56723.....288744......1201502........4136338 ..81..225..1884..22452...288744....2663589.....19694227......116690636 .116..354..3463..57488..1201502...19694227....262752720.....2770530466 .160..529..5800.126978..4136338..116690636...2770530466....52431215293 .214..758..9065.248290.11927710..572683182..24162848938...815858815795 .279.1049.13397.439534.29250767.2305864084.172608985173.10481797492543 LINKS R. H. Hardin, Table of n, a(n) for n = 1..199 EXAMPLE Some solutions for 3X3 ..0..1..1....0..1..1....0..0..1....0..1..1....0..1..1....0..0..1....0..0..0 ..1..0..0....1..0..1....0..1..0....1..1..1....1..0..1....0..1..0....0..0..0 ..1..1..1....1..1..0....0..1..1....1..1..1....1..0..1....1..0..1....0..0..0 ... ...2..2.......2..3.......1..2.......3..4.......2..3.......1..2.......0..0... ...3..2.......3..2.......2..3.......4..4.......2..2.......2..2.......0..0... CROSSREFS Sequence in context: A053674 A205679 A166980 * A243885 A171017 A195608 Adjacent sequences:  A184068 A184069 A184070 * A184072 A184073 A184074 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 09 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 1 12:50 EST 2020. Contains 338833 sequences. (Running on oeis4.)